Dorman 986-503 Drive Shaft - Rear

Dorman 986-503 Drive Shaft Overview

Dorman 986-503 is a complete drive shaft assembly for driveline repair where a direct replacement is needed. It arrives pre-balanced and built with new yokes, tubes, constant velocity joints, and universal joints to simplify service on compatible vehicles, including Mercedes-Benz applications referenced by the cross-reference numbers.

Key Features

• Complete drive shaft assembly for driveline replacement
• Pre-balanced for installation readiness
• 100% new yokes and tubes
• New universal joints included
• Steel shaft construction
• 68.75 in. compressed drive shaft length
• 2.5 in. shaft diameter with 0.065 in. wall thickness
• Bolt-on end 1 and bolt-on end 2 connection types
• Standard replacement grade
• Part number 986-503 for catalog and service matching

Detailed Description

This Dorman drive shaft is built as a direct-service driveline component for vehicles that require a bolt-on replacement assembly. The steel shaft uses a 68.75 in. compressed length, 2.5 in. diameter, and 0.065 in. wall thickness, with no slip yoke and no overall length adjustment. Because the assembly is pre-balanced and supplied with new yokes, tubes, and universal joints, it supports a cleaner replacement process when servicing worn driveline components on Mercedes-Benz models that use this application. The part number 986-503 is also referenced by 1154103706 and 1155105501 for the same application.

What This Drive Shaft Helps Address

• Driveline vibration caused by a worn or out-of-balance shaft
• Clunking or driveline noise from worn universal joints
• Service issues related to damaged yokes or tube wear
• Loss of smooth power transfer through the driveline
• Replacement needs where a bolt-on drive shaft assembly is required

Installation Notes and Tips

Verify the compressed length, bolt-on end configuration, and shaft dimensions before installation. Confirm the vehicle’s driveline layout and compare the existing assembly to part number 986-503 to ensure the correct application. Because this is a complete drive shaft assembly, inspect mating components, flange surfaces, and related driveline hardware during service to help prevent repeat vibration or noise concerns.

Quality Assurance

Dorman supplies this as a standard replacement drive shaft assembly with new core components and pre-balanced construction for service readiness. The design focuses on restoring driveline function with the specified steel shaft, new universal joints, and bolt-on fitment details for the intended application.